package me.flyray.bsin.server.utils;

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;


public class HttpRequest {
    /**
     * 向指定URL发送GET方法的请求
     *
     * @param url   发送请求的URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url   发送请求的 URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "application/json, text/javascript, */*; q=0.01");
            conn.setRequestProperty("Accept-Encoding", "gzip, deflate");
            conn.setRequestProperty("Connection", "keep-alive");
            conn.setRequestProperty("Accept-Language", "zh-CN,zh;q=0.8");
            conn.setRequestProperty("Content-Length", "80");
            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
            conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36");

            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            OutputStreamWriter outWriter = new OutputStreamWriter(conn.getOutputStream(), "utf-8");
            out = new PrintWriter(outWriter);
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(), "UTF-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();

            }
        }
        return result;
    }

    //发送xml格式
    public static String postXmlRequest(String url, String xml) throws Exception {
        HttpPost post = new HttpPost(url);
        post.setHeader("Content-type", "text/xml");
        post.setEntity(new StringEntity(xml));
        post.setEntity(new StringEntity(xml, "UTF-8"));
        CloseableHttpClient client = HttpClients.createDefault();
        CloseableHttpResponse response = client.execute(post);

        return response.getStatusLine().getStatusCode() == 200 ?
                EntityUtils.toString(response.getEntity(), "UTF-8") : null;
    }


    public static void main(String[] args) {
        //发送 GET 请求
       /* String s=HttpRequest.sendGet("http://localhost:6144/Home/RequestString", "key=123&v=456");
        System.out.println(s);*/

        //发送 POST 请求
       /* String sr=HttpRequest.sendPost("http://www.cheshouye.com/api/weizhang/get_all_config","");

        JSONObject jsStr = JSONObject.fromObject(sr);
        JSONArray jsonarray = jsStr.getJSONArray("configs");

        for(int i=0;i<jsonarray.size();i++){
        	JSONObject ob1=(JSONObject)jsonarray.get(i);
        	Integer provinceId=ob1.getInt("provice_id");
        	String provinceName=ob1.getString("provice_name");
        	String provinceShortName=ob1.getString("provice_short_name");
        	JSONArray jsonarray2 = ob1.getJSONArray("citys");


        }
        System.out.println(jsonarray);*/
        //(JSONObject)jsonarray[i]
    }
}
